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nes-proj/examples/slip-radio/slip-radio.c

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/*
* Copyright (c) 2011, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/**
* \file
* Slip-radio driver
* \author
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#include "contiki.h"
#include "net/ipv6/uip.h"
#include "net/ipv6/uip-ds6.h"
#include "dev/slip.h"
#include <string.h>
#include "net/netstack.h"
#include "net/packetbuf.h"
#include "cmd.h"
#include "slip-radio.h"
#include "packetutils.h"
#include "os/sys/log.h"
#include <stdio.h>
#define LOG_MODULE "slip-radio"
#define LOG_LEVEL LOG_LEVEL_NONE
/*---------------------------------------------------------------------------*/
#ifdef SLIP_RADIO_CONF_SENSORS
extern const struct slip_radio_sensors SLIP_RADIO_CONF_SENSORS;
#endif
/* max 16 packets at the same time??? */
uint8_t packet_ids[16];
int packet_pos;
static int slip_radio_cmd_handler(const uint8_t *data, int len);
int cmd_handler_cc2420(const uint8_t *data, int len);
/*---------------------------------------------------------------------------*/
#ifdef CMD_CONF_HANDLERS
CMD_HANDLERS(CMD_CONF_HANDLERS);
#else
CMD_HANDLERS(slip_radio_cmd_handler);
#endif
static const uint16_t mac_src_pan_id = IEEE802154_PANID;
/*---------------------------------------------------------------------------*/
static int
is_broadcast_addr(uint8_t mode, uint8_t *addr)
{
int i = mode == FRAME802154_SHORTADDRMODE ? 2 : 8;
while(i-- > 0) {
if(addr[i] != 0xff) {
return 0;
}
}
return 1;
}
/*---------------------------------------------------------------------------*/
static int
parse_frame(void)
{
frame802154_t frame;
int len;
len = packetbuf_datalen();
if(frame802154_parse(packetbuf_dataptr(), len, &frame)) {
if(frame.fcf.dest_addr_mode) {
if(frame.dest_pid != mac_src_pan_id &&
frame.dest_pid != FRAME802154_BROADCASTPANDID) {
/* Packet to another PAN */
return 0;
}
if(!is_broadcast_addr(frame.fcf.dest_addr_mode, frame.dest_addr)) {
packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, (linkaddr_t *)&frame.dest_addr);
}
}
packetbuf_set_addr(PACKETBUF_ADDR_SENDER, (linkaddr_t *)&frame.src_addr);
packetbuf_set_attr(PACKETBUF_ATTR_MAC_SEQNO, frame.seq);
return 0;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static void
packet_sent(void *ptr, int status, int transmissions)
{
uint8_t buf[20];
uint8_t sid;
int pos;
sid = *((uint8_t *)ptr);
LOG_DBG("Slip-radio: packet sent! sid: %d, status: %d, tx: %d\n",
sid, status, transmissions);
/* packet callback from lower layers */
/* neighbor_info_packet_sent(status, transmissions); */
pos = 0;
buf[pos++] = '!';
buf[pos++] = 'R';
buf[pos++] = sid;
buf[pos++] = status; /* one byte ? */
buf[pos++] = transmissions;
cmd_send(buf, pos);
}
/*---------------------------------------------------------------------------*/
static int
slip_radio_cmd_handler(const uint8_t *data, int len)
{
int i;
if(data[0] == '!') {
/* should send out stuff to the radio - ignore it as IP */
/* --- s e n d --- */
if(data[1] == 'S') {
int pos;
packet_ids[packet_pos] = data[2];
packetbuf_clear();
pos = packetutils_deserialize_atts(&data[3], len - 3);
if(pos < 0) {
LOG_ERR("illegal packet attributes\n");
return 1;
}
pos += 3;
len -= pos;
if(len > PACKETBUF_SIZE) {
len = PACKETBUF_SIZE;
}
memcpy(packetbuf_dataptr(), &data[pos], len);
packetbuf_set_datalen(len);
LOG_DBG("sending %u (%d bytes)\n",
data[2], packetbuf_datalen());
/* parse frame before sending to get addresses, etc. */
parse_frame();
NETSTACK_MAC.send(packet_sent, &packet_ids[packet_pos]);
packet_pos++;
if(packet_pos >= sizeof(packet_ids)) {
packet_pos = 0;
}
return 1;
} else if(data[1] == 'V') {
int type = ((uint16_t)data[2] << 8) | data[3];
int value = ((uint16_t)data[4] << 8) | data[5];
int param = type; /* packetutils_to_radio_param(type); */
if(param < 0) {
printf("radio: unknown parameter %d (can not set to %d)\n", type, value);
} else {
if(param == RADIO_PARAM_RX_MODE) {
printf("radio: setting rxmode to 0x%x\n", value);
} else if(param == RADIO_PARAM_PAN_ID) {
printf("radio: setting pan id to 0x%04x\n", value);
} else if(param == RADIO_PARAM_CHANNEL) {
printf("radio: setting channel: %u\n", value);
} else {
printf("radio: setting param %d to %d (0x%02x)\n", param, value, value);
}
NETSTACK_RADIO.set_value(param, value);
}
return 1;
}
} else if(data[0] == '?') {
LOG_DBG("Got request message of type %c\n", data[1]);
if(data[1] == 'M') {
/* this is just a test so far... just to see if it works */
uip_buf[0] = '!';
uip_buf[1] = 'M';
for(i = 0; i < UIP_LLADDR_LEN; i++) {
uip_buf[2 + i] = uip_lladdr.addr[i];
}
uip_len = 10;
cmd_send(uip_buf, uip_len);
return 1;
} else if(data[1] == 'V') {
/* ask the radio about the specific parameter and send it back... */
int type = ((uint16_t)data[2] << 8) | data[3];
int value;
int param = type; /* packetutils_to_radio_param(type); */
if(param < 0) {
printf("radio: unknown parameter %d\n", type);
}
NETSTACK_RADIO.get_value(param, &value);
uip_buf[0] = '!';
uip_buf[1] = 'V';
uip_buf[2] = type >> 8;
uip_buf[3] = type & 0xff;
uip_buf[4] = value >> 8;
uip_buf[5] = value & 0xff;
uip_len = 6;
cmd_send(uip_buf, uip_len);
}
}
return 0;
}
/*---------------------------------------------------------------------------*/
static void
slip_input_callback(void)
{
LOG_DBG("SR-SIN: %u '%c%c'\n", uip_len, uip_buf[0], uip_buf[1]);
if(!cmd_input(uip_buf, uip_len)) {
cmd_send((uint8_t *)"EUnknown command", 16);
}
uipbuf_clear();
}
/*---------------------------------------------------------------------------*/
static void
init(void)
{
slip_arch_init();
process_start(&slip_process, NULL);
slip_set_input_callback(slip_input_callback);
packet_pos = 0;
}
/*---------------------------------------------------------------------------*/
PROCESS(slip_radio_process, "Slip radio process");
AUTOSTART_PROCESSES(&slip_radio_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(slip_radio_process, ev, data)
{
static struct etimer et;
PROCESS_BEGIN();
init();
#ifdef SLIP_RADIO_CONF_SENSORS
SLIP_RADIO_CONF_SENSORS.init();
#endif
LOG_INFO("Slip Radio started\n");
etimer_set(&et, CLOCK_SECOND * 3);
while(1) {
PROCESS_YIELD();
if(etimer_expired(&et)) {
etimer_reset(&et);
#ifdef SLIP_RADIO_CONF_SENSORS
SLIP_RADIO_CONF_SENSORS.send();
#endif
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
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